Casing for hot-air furnaces



(Model.)

S. N. BETTS.

GASING PoR HOT AIR PURNAGBS.

No. 333,989. Patented Jan. 1 2, 1886.

N. PETERS, PhotmLilhugrupher. Wnshinglnn. DA C.

Nrrno STATES oAslNe FOR HOT-Am FURNAGES.

SPECIFICATION forming part of Letters Patent No. 333,989, dated January 12, 1886,

Application filed September 22, 1881. Serial No. 42,385. (Model.)

` To all whom it may concern.-

Be it known that l, STEPHEN N. BE'rrs, a citizen of the United States, residing in the township of Adams, county of Hillsdale, and

State of Michigan, have invented a new and The ligure in the drawing represents a perspective view of the casing.

The standards C are bolted to B,which may be a circle or any form to suit the form of the stove used, and the amount of the stove we wish to inclose. This forms the frame-work of the casing. To the standards C the doors D are hung, which doors,when closed, complete the air-passages,and also the casing,and make the heater interchangeable, as desired.

When ventilation is desired.an air-duct may 3o extend from under the stove to any point from which fresh air is to be drawn,with a damper in it to regulate the amount desired.

Operation: The coldest air in the room (from the floor) passes under the easing, then 3 5 up through between it and the stove, s heated in its passage, and is discharged into the room. This warms and equalizes the temperature of the air throughout the room.

The casing is but little Warmer than the 4( f air passing through it, and cuts off radiation.

Those seated near it will not suffer from heat. Y Those coming into the room cold can open the doors D and receive the benefits of direct radiation from the stove. 4

Vhen the doors D are closed, the heater is hot-air. When they are open,it is a radiator.

Vhat l claim, and desire to secure by Letters Patent, is-

The combination, in the heater, equalizer, 5 and ventilator, of the doors D with the frame, having the circles B and standards C, substantially as and for the purpose described.

STEPHEN N. BETTS.

Vitnesses: A

EDWIN S. BETrs, FRANK N. STEWART. 

